From Valerie in New Zealand: Hello Ann, Sadly your advice re soy products is incorrect and could be very dangerous. We suggest you visit www.soyonlineservice.co.nz which has links to correct research, much by US Federal laboratories. Some useful thyroid links are below. NCTR is the US FDA laboratory and NIH is the National Institutes of Health Anti-thyroid isoflavones from Soybean; isolation, characterization, and mechanisms of action, Biochem Pharmacol - Nov 1997; 54(10):1087-96, National Center For Toxicological Research, nctr , http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9464451&dopt=Abstract Inactivation of thyroid peroxidase by Soy isoflavones, in vitro and in vivo, J Chromatogr B Analyt Technol Biomed Life - Sept 25, 2002; 777(1-2):269-79 Division of Biochemical Toxicology, National Center for Toxicological Research, nctr , http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12270219&dopt=Abstract Goitrogenic and estrogenic activity of Soy isoflavones, Environ Health Perspect - June 2002; 110 Suppl 3:349-53, Division of Biochemical Toxicology, National Center for Toxicological Research, nctr , http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12060828&dopt=Abstract Use of Soy protein supplement and resultant need for increased dose of levothyroxine, Endocr Pract May-June 2001; 7(3):193-4, Division of Endocrinology and Metabolism, University of Alabama at Birmingham, School of Medicine, Alabama, USA , http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11421567&dopt=Abstract From Valerie for www.soyonlineservice.co.nz >>>> Visit "testimonies LINK to New Zealand-based source for negatives on SOY Remember we are NOT Doctors and have NO medical training. This site is like an Encylopedia - there are many pages, many links on many topics. Support our work with any size DONATION - see left side of any page - for how to donate. You can help raise awareness of CAM.